<template>
    <div class="goods-list">
        <div class="goods-item" v-for="item in goodslist" :key="item.id" @click="getDetail(item.id)">
            <img :src="item.img_url" alt="">
            <h1 class="title">{{item.title}}</h1>
            <div class="info">
                <p class="price">
                    <span class="now">￥{{item.sell_price}}</span>
                    <span class="old">￥{{item.market_price}}</span>
                </p>
                <p class="sell">
                    <span>热卖中</span>
                    <span>剩{{item.stock_quantity}}件</span>
                </p>
            </div>
        </div>
        <mt-button type="danger" size="large" @click="getMore" v-if="flag">加载更多</mt-button>
        <p v-if="!flag" class="contmore">没有数据加载</p>
    </div>
</template>

<script>
    export default {
        name: "goodsList",
        data(){
            return {
                pageIndex : 0,
                goodslist : [],
                flag : true,
            }
        },
        created() {
            this.getGoodsList();
        },
        methods : {
            getGoodsList(){
                this.axios.get('/api/getgoods/' + this.pageIndex).then(result => {
                    if(result.status === 200){
                        this.goodslist = this.goodslist.concat(result.data);
                    }
                })
            },
            getMore(){
                this.pageIndex ++;
                this.getGoodsList();
            },
            getDetail(id){
                // 使用 Js 的形式进行路由导航

                //注意：一定要区分 this.$route 和 this.$router 这两个对象
                //其中：this.$route 是路由【参数对象】，所有路由中的参数， params、query 都属于它
                //其中：this.$router 是一个路由【导航对象】，用它可以方便的使用 JS 代码，实现路由的前进、后退、跳转到新的 URL 地址

                // console.log(this);
                //1.最简单的
                // this.$router.push('/home/goodsinfo/' + id);
                //2.传递对象
                // this.$router.push({path: "/home/goodsinfo/" + id});
                //3.传递命名的路由
                this.$router.push({name : 'goodsinfo', params : {id}})
            }
        },
        watch : {
            goodslist(newVal, oldVal){
                if(newVal.length === oldVal.length){
                    this.flag = !this.flag;
                }
            }
        }
    }
</script>

<style scoped lang="scss">
    .goods-list{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        padding: 7px;
        justify-content: space-between;
        .goods-item{
            width:49%;
            border: 1px solid #ccc;
            box-shadow: 0 0 8px #ccc;
            margin: 4px 0px;
            padding: 2px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            img{
                width:100%;
            }
            .title{
                font-size: .6em;
                font-weight: 600;
            }
            .info{
                background-color: #ddc;
                p{
                    margin: 0;
                   padding: 5px;
                }
                .price{
                    .now{
                        color:red;
                        font-weight: bold;
                        font-size: 1em;
                    }
                    .old {
                        text-decoration: line-through;
                        font-size: .6em;
                        margin-left: .5em;
                    }
                }
                .sell{
                    display: flex;
                    justify-content: space-between;
                    font-size: .6em;
                }
            }
        }
        .contmore{
            text-align: center;
            font-size: .7em;
            width: 100%;
        }

    }
</style>